<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import userService, {getUserInfoService, useInfoStore} from '@/api/user.js'
import { ElMessage } from 'element-plus'
import {useRouter} from 'vue-router'
import {useTokenStore} from '@/stores/token.js'

//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)

// 注册表单数据
const registerData = ref({
  username: '',
  password: '',
  confirmPassword: ''

})

// 注册按钮点击事件
const register = async () => {

   if (!registerData.value.username || !registerData.value.password || !registerData.value.confirmPassword) {
    return
  }
   if (registerData.value.username.length < 1 || registerData.value.username.length > 16) {
     return
   }
   if ( registerData.value.password.length < 5 || registerData.value.password.length > 16) {
     return
   }
   if(registerData.value.password != registerData.value.confirmPassword) {
     return
   }

  let result = await userService.registerService(registerData.value)
  console.log( result)
  ElMessage.success(result.message ? result.message : '注册成功')
}

// 校验确认密码
const validatePass2 = (rule,value,callback) => {
  if (value === '') {
    callback(new Error('请在此输入密码'))
  } else if (value !== registerData.value.password) {
    callback(new Error('两次输入的密码不一致'))
  } else {
    callback()
  }
}

//表单校验
const rules = ({
  username: [
    { required: true, message: '用户名不能为空', trigger: 'blur' },
    { min: 1, max: 16, message: '用户名为长度为5-16', trigger: 'blur' },
  ],
  password: [
    { required: true, message: '密码不能为空', trigger: 'blur' },
    { min: 5, max: 16, message: '密码为5-16位', trigger: 'blur' },
  ],
  confirmPassword: [
    { required: true, validator: validatePass2, trigger: 'blur' },
  ],
})


const router = useRouter()

// 登录 按钮点击事件
const login = async () => {

  if (!registerData.value.username || !registerData.value.password) {
    return
  }

  let result = await userService.loginService(registerData.value)
  var tokenStore = useTokenStore();
  tokenStore.setToken(result.data)
  console.log(result);
  ElMessage.success('登录成功')
  // 获取用户信息保存到pinia
  let ret = await getUserInfoService()
  useInfoStore().setInfo(ret.data)
  router.push( '/')

}
// 清空注册表单
const clearRegisterData = () => {
  registerData.value = {
    username: '',
    password: '',
    confirmPassword: ''
  }
}

</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册表单 -->
      <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
        </el-form-item>
        <el-form-item prop="confirmPassword">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerData.confirmPassword"></el-input>
        </el-form-item>
        <!-- 注册按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="register">
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <!-- 登录表单 -->
      <el-form ref="form" size="large" autocomplete="off" v-else  :model ="registerData" :rules ="rules">
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"> </el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
    url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>